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* Adding sys/msg.h header and relative syscalls

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27416 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Salvatore Benedetto 2008-09-11 14:52:35 +00:00
parent b9b04b6c32
commit f22e1421a4
2 changed files with 95 additions and 0 deletions
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44
headers/posix/sys/msg.h Normal file
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/*
* Copyright 2008, Haiku Inc. All Rights Reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _SYS_MSG_H
#define _SYS_MSG_H
#include <sys/cdefs.h>
#include <sys/ipc.h>
#include <sys/types.h>
typedef unsigned long msgqnum_t;
typedef unsigned long msglen_t;
/* No error if big message */
#define MSG_NOERROR 010000
struct msqid_ds {
struct ipc_perm msg_perm; /* Operation permission structure */
msgqnum_t msg_qnum; /* Number of messages currently on queue */
msglen_t msg_qbytes; /* Max number of bytes allowed on queue */
pid_t msg_lspid; /* PID of last msgsnd */
pid_t msg_lrpid; /* PID of last msgrcv */
time_t msg_stime; /* Time of last msgsnd */
time_t msg_rtime; /* Time of last msgrcv */
time_t msg_ctime; /* Time of last change */
};
/* Structure used to send/receive a message */
struct msgbuf {
long mtype; /* message type */
char mtext[1]; /* message text */
};
__BEGIN_DECLS
int msgctl(int, int, struct msqid_ds *);
int msgget(key_t, int);
ssize_t msgrcv(int, void *, size_t, long, int);
int msgsnd(int, const void *, size_t, int);
__END_DECLS
#endif /* _SYS_MSG_H */

51
src/system/libroot/posix/sys/xsi_msg_queue.cpp Normal file
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/*
* Copyright 2008, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Salvatore Benedetto <salvatore.benedetto@gmail.com>
*/
#include <sys/msg.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdlib.h>
#include <OS.h>
#include <syscall_utils.h>
#include <syscalls.h>
int
msgctl(int messageQueueID, int command, struct msqid_ds *buffer)
{
RETURN_AND_SET_ERRNO(_kern_xsi_msgctl(messageQueueID, command, buffer));
}
int
msgget(key_t key, int messageQueueFlags)
{
RETURN_AND_SET_ERRNO(_kern_xsi_msgget(key, messageQueueFlags));
}
ssize_t
msgrcv(int messageQueueID, void *messagePointer, size_t messageSize,
long messageType, int messageFlags)
{
RETURN_AND_SET_ERRNO(_kern_xsi_msgrcv(messageQueueID, messagePointer,
messageSize, messageType, messageFlags));
}
int
msgsnd(int messageQueueID, const void *messagePointer, size_t messageSize,
int messageFlags)
{
RETURN_AND_SET_ERRNO(_kern_xsi_msgsnd(messageQueueID, messagePointer,
messageSize, messageFlags));
}